Charles a



i @nitrivtstre stwt @fitta` CHARLES A. ,SCHAEFER OF CHICAGO, ILLINOIS,AssIeNoR To HIMSELF, FRITZ FRILL. MAN, WILLIAM WOLFF. AND JOHNsoHAcHTsoHoBEF., or THE SAME PLACE.

Letters .Patent N0, 64,910, dated Way 21, 1867.

IMPROVEMENT IN HANING AND LOCKING SASH.

TO ALL WI-IOM THIS MAY CONCERN;

Be it known that I, CHARLES A. SCHAEEER, of Chicago, in the county ofCook, and 'State of Illinois, invented a. Device for Hanging andiLOCkingSash;' and I do hereby declare that the following is a full, clear, andexact description of the construction aid operation of' the same,reference being had to the accompanying drawings and letters markedthereon, makinga, part 0f this description, in whichi Figure 1 is anelevation of lily invention, with the front plate removed in order toshow the inside arrangements.

Figure 2 is a perspective representation ofthe lock used for holding thesash in position after havingbeen moved to the required place.

have

The natureofv my invention Consiste, iii-st, in supporting sash by meansof cog-gearing and a coil spring, so arranged as to elevate and l0We1the tash at will, 'and retain them in any desired position; second, inarranging a peculiar-Constructed 100k for holding the sash rigidly inposition when closed, or at other points when required. V

In order t0 give a correct undereiehd'rng of my inyention I have markedeach part with the same letter, and will now give a detaileddescription.v

A-represents .the beek Piate, and B Blthe rim or sides, of the box inwhich my device is arranged, the face plate being removed to show. thegetring, 85e. The projections H have screw holes, for the purpose offastening the face plate, in a manner Similar to lock-cases. L is ashaft of cog-wheel C, the ends of which turn in holes made in beck lateA, and in 'I'On; plate, (not shown.) This wheel meshes into wheel D,having shaft E operating in front and back plates, the Same as shaft L.The cog-wheel lF is also attached to'. the shaft E, and is lmade tooperate the rack l 1 1, 3DG, attachedv to the sash J, shown by redlines. G shows a common coil sprin'g,.one end of which is attached toshaft L, and the other end to the post P, iig. 1, and operates thegearing above described, and iS mede Streng eIlOl'gh to balance the sashwhen raised. I make the `wheel D about onellnlf 0f the Size 0f Wheel C,fOr the Purpose of moving the sash J as far as necessary withoutuncoiling spring so much as to cause its fOlGe t0 be Checked by beingcramped in the case A B B. An elevated step is made for the back end Ofthe Shaft E i0 Fest in, and serve as a stop for the spring Gto strikeagainst and prevent friction, which occurs if the spring, when uneoiied,were allowed to press against shaft E. Drawing X shows the step S, ShaftE, and SPTihgG in POSOn dite? the latter has been uncoiled. The lock Iis shown more Clearly at iig. 2, and is made to revolve half Way aroundin the front and back plates of the case, and has a notch, K, in itsperiphery, for the purpose l0f permitting the wheel F to revolve whenthe sash J is to pass up or down -and also has a nih 01 Stop, n, rigidlyattached to the back end, which strikes against an elevated semi-rim, o,and is thereby prevented from being turned Olii of place. A key-hole ismade in the front end of lock Iifor the purpose of inserting through theCasing Mld into the lock a key or stem of a knob, in order that the sashJ may he permanently xed in any given pOSitiOH. The red lines a, iig. 1,show the position of the knob, which is supposed to projeet Outward fromthe inside easing of the window far enough to be easily operated.

Operation..

The CaSe A B B mut he inserted :n a mortise made in thejamb-casing inthe same manner as a common lock, and secured by screws r, put thlelghthe face plate B', as seen at g. 1, after which a kuobcan be fitted. tothe Casing, S9 RS t0 100k and lllliOCk ille wheel F, when desired, bysimply turning the lock I half around.

Having thus fully described my device, what I claim, and desire tosecure by Letters Patent, is

The half round locking-Studi, in CCmbination with a rack, J, and pinion,F, to lock a window-sash at any desired point, substantially as setforth.

lCII-AS. A. SCHAEFEB..

Witnesses:

GEO. L. CHAPIN, A. HAYwAnD.

